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Electro-optical device, transmissive liquid crystal display device, and electronic device

a liquid crystal display and electronic technology, applied in non-linear optics, instruments, optics, etc., can solve problems such as complex structure, and achieve the effect of suppressing the deviation of light from the opening region

Active Publication Date: 2020-05-19
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention provides a way to make sure that light doesn't escape from an electro-optical device, like a phone or TV screen, in a simple way.

Problems solved by technology

However, in a technology described in Japanese Patent No. 3,991,569, a complicated structure (structure in which transparent film is formed on first concave portion of first interlayer insulating film and second interlayer insulating film is further formed on second concave portion of transparent film) is required.

Method used

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  • Electro-optical device, transmissive liquid crystal display device, and electronic device
  • Electro-optical device, transmissive liquid crystal display device, and electronic device
  • Electro-optical device, transmissive liquid crystal display device, and electronic device

Examples

Experimental program
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embodiment

[0029]As one embodiment of the invention, an active matrix type liquid crystal display device 100 including a thin film transistor (TFT) as a switching element of a pixel is exemplified.

[0030]FIG. 1 is a schematic planar view showing an example of an overall configuration of the liquid crystal display device 100. The liquid crystal display device 100 includes an element substrate 200, a counter substrate 300 disposed opposite to the element substrate 200, and a liquid crystal layer 400 disposed between the element substrate 200 and the counter substrate 300.

[0031]The element substrate 200 and the counter substrate 300 are bonded by a sealing material 410 disposed in a frame shape. The liquid crystal layer 400 is configured with a liquid crystal having positive or negative dielectric anisotropy sealed in a space surrounded by the element substrate 200, the counter substrate 300, and the sealing material 410.

[0032]For example, the sealing material 410 is made of an adhesive such as a ...

modification example

[0081]The invention is not limited to the above-described embodiments, but can be applied to other embodiments as described below, for example, and various modifications are possible. In addition, in the modified embodiments and embodiments described below, one or a plurality of arbitrarily selected may be appropriately combined.

[0082]For example, in order to further enhance the light utilization efficiency, the liquid crystal display device 100 including the microlens may be configured. FIG. 8 is a schematic sectional view showing the liquid crystal display device 100 according to the first modification example of the above-described embodiment. The microlens 320 is provided in a counter substrate 300 side in the liquid crystal display device 100 of the first modification example. FIG. 9 is a schematic sectional view showing the liquid crystal display device 100 according to the second modification example of the above-described embodiment. The microlens 320 is provided in the coun...

application example

[0084]Next, as an application example of the above-described embodiment, a projection type display device (projector) will be described. FIG. 10 is a schematic diagram showing an example of an optical system of the projector 700 according to the application example. The projector 700 is configured by including a light source device 701, an integrator 704, a polarization conversion element 705, a color separation light guide optical system 702, a liquid crystal light modulation device 710R as a light modulation device, a liquid crystal light modulation device 710G, a liquid crystal light modulation device 710B, a cross dichroic prism 712, and the projection optical system 714. The liquid crystal display devices 720R, 720G, and 720B described below are provided in the liquid crystal light modulation devices 710R, 710G, and 710B. As the liquid crystal display devices 720R, 720G, and 720B, for example, it is possible to use the above-described liquid crystal display device 100.

[0085]The...

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Abstract

An electro-optical device includes a pixel electrode, a light shielding member disposed along an edge of the pixel electrode in a planar view viewed in a thickness direction that is a direction perpendicular to the pixel electrode, a first insulator that is provided in a region overlapped with at least the light shielding member in the planar view, and having light transmission, and a second insulator that is provided to be in contact with the first insulator on an opening region that is an inside surrounded by the light shielding member in the planar view, and having the light transmission and a refractive index higher than that of the first insulator, in which the second insulator configures a waveguide which reflects incident light incident on the opening region at an interface between the second insulator and the first insulator, and propagates the incident light inside the second insulator.

Description

BACKGROUND1. Technical Field[0001]The present invention relates to an electro-optical device, a transmissive liquid crystal display device, and an electronic device.2. Related Art[0002]A liquid crystal display device including a liquid crystal layer between an element substrate provided with a plurality of pixel electrodes and switching elements and a counter substrate disposed opposite to the element substrate is known. In correspondence with each pixel electrode, an opening region which is a region transmitting light is provided. In the liquid crystal display device, a technology for suppressing incident light from deviating from the opening region in order to improve light utilization efficiency and prevent light irradiation to a switching element (semiconductor element) is demanded.[0003]For example, in a technology described in Japanese Patent No. 3,991,569, in an opening region of an element substrate, a concave portion (this is referred to as first concave portion) is formed ...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): G02F1/1335G02F1/225G02F1/1333
CPCG02F1/133512G02F1/225G02F1/133345G02F1/133524G02F1/133526
Inventor TATENO, YOSHITAKEITO, SATOSHISAWAKI, DAISUKEOHORI, MITSUTAKA
Owner SEIKO EPSON CORP
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